Mechanism for disengaging anchor-escapements in calculating-machines.



' V. J. ODHNER. MECHANISM FOR DISENGAGING- ANGHQR ESGAPEMENTS IN CALCULATING momma.

I APPLICATION FILED JAN. 13.1911v 993,708.

Patented. May 30, 191.1.

and residingat St. Petersburg, Russia, have VALENTIN JAKOB ODHNER, OF ST. PETERSBURG, RUSSIA.

MEHANISM FOR DISENGAGING ANCHOR-ESCAPEMEN'IS IN CALCULATING-MACHINES.

snares.

' Specification of letters Yatent.

Patented May 30,1911.

Application filed January 13, 1911. Serial No. 602,457.

To all whom it may concern.

Be it known that I, VALENTIN JAKOB ODHNER, a subject of ,the King of Sweden,

invented certain new and useful Improve ments in Mechanism for Disengaging Anchor-Escapements in Calculating-Machines, of which the following is a specification.

My invention relates to calculating machines, and a primary object is to provide improved mechanism for throwing out of gear the anchor-escapemcnts that coact with the gears of the accumulator disks or adding wheels, the anchor-shaft being shifted at the commencement of the rotation of the counting-mechanism shaft by means of a cam mounted on the latter. Similar devices, in which a shaft parallel to the counting-mechanism shaft isdisplaced at the commencement of the rotation of the counting-mechanism shaft/by a cam fast on the latter and a lever coasting with the cam are well-.

known, (see German Patent No. 214,403) but in these devices the adjustment of the auxiliary shaft consists only in rotating it and its purpose is to remove braking members arranged on the shaft from the addition wheels and to place stops in the path of projections, on the addition wheels. In contradistinction to these known arrangements, according to my invention the cam does not bring about a partial rotation of the axle carrying the anchor-cscapements, but a sluing of the same, and the purpose of sluing the anchor-shaft is to remove each arm of an anchor located in its operative position out of its appertaining counting wheel, without causing the other arm to engage with the wheel; the latter would be the case when employing the above mentioned known devices, and consequently the anchors would not be completely disengaged from the counting wheels.

Now it is true devices are known in calculating machines, (see German Patent No.

185,060, for example) in which the twoarmed anchor is revoluble about a shaft which can be rocked about an aXis located near the place of engagement of the anchorpallet which remains in its operative position; in these wellknown devices for temporarily diminishing the locking action of anchor-escapements in calculating machines and the like, the anchor-escapement is, however, formed in such manner that its acts on two gears connected with one another,- and the arm of the anchor engaging with the one of these two gears is brought out of its operative position by sluing the shaft, while the other arm of the same anchor remains in its operative .position, '5. e. in engagementwith the second gear. My improved mechanism differs from these known devices in that both the arms or pallets of oncand the same anchor ooact with one single gear, and when the anchor-shaft is slued or moved transversely the two arms of each anchor are completely disconnected from the appertaining gear. In this manner very simple and very effective mechanism is obtained which is a great advantage, particularly for calculating machines which are otherwise relatively complicated, because the simpler the mechanism having at least equal eificiency can be made, the less will be the injurious resistances and the danger of disturbances in working.

Two illustrative embodiments of my in Vention are represented by way of example in-the accompanying drawing, whercin:--

Figure 1 is a front sectional elevation showing one form of nay-mechanism, and Fig. 2 is an. elevationshowing the principal parts of another form.

Referring firstly to Fig. l, the counting wheels 6 and the numbered disks, not shown, are mounted on the axle a. The two arms of an anchor 0 engage alternately, in like manner as in timepiece mechanism, in the teeth of each counting wheel I). All the anchors are mounted on' a common shaft 9 which is journaled in the one end of a twoarmed lever f able to rock about an axle d.

The other end ofthe lever f carries an anti friction roller 71, which is pressed by a spring 70 against a cam '2' mounted on the axle a. To the one arm of the anchor c is attached a spring Z which tends to pull it outward until it abuts against a lug m provided on the lever f. The'projectionz" of the cam 2' is arranged in such manner relatively to the numbered disks that, when these have been returned to zero, it lifts the roller 72 and rocks the lever f so that the anchors 0 look the wheels I) in the required manner.

Now when the numbered disks have moved, during a calculation, out of their zero position and: are to be returned to zero,

the axle a is rotated in the direction of the arrow in known manner by a wlnged nut or the like. The projection 11 of the cam i slides away from the roller h, and this is roll ar 0 rgsting z agai nslx n we latte? by an 2 cmdlsimch othe f0. 1 tins lever does 1106 d anchor c bufis can mam HTS part, revolubly armed nch i-he mlchors c 11 MA. OPBI'E-SIOHIOE? tins modified form wise the same as that of the 01m desc'meu abeve with reference "20 ITig', L

i. 11 11190 anlsm -or cus ngwgmg ammo: escapements 1n. calculatmg mmzhmes the of patent may be obtame. 01 five cents each,

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A. A5 LOVIAGUINE, AUG. Mmmz.

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